#2 should be “do your parents drink orange juice?”
And
#3 is “does your mother go to the supermarket?”
And
#4 is “does your father cook dinner?”
c, because it explains how he was the strongest of all men and he was noble and huge
Actually..... all of them are correct!
The difference is whether the word "the orchestra" needs a plural or singular verb. In American English a singular verb is needed (so American English would only accept options a) and c) ) but in British English both forms are acceptable: so in British English all four sentences are correct.
